Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

A250725

Number of (n+1) X (4+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

Terms

    a(0) =114a(1) =257a(2) =496a(3) =885a(4) =1500a(5) =2434a(6) =3807a(7) =5760a(8) =8465a(9) =12119a(10) =16954a(11) =23231a(12) =31250a(13) =41344a(14) =53889a(15) =69298a(16) =88031a(17) =110589a(18) =137524a(19) =169433a(20) =206968a(21) =250830a(22) =301779a(23) =360628a(24) =428253a(25) =505587a(26) =593630a(27) =693443a(28) =806158a(29) =932972

External references